Cryo and cavity testing schedules and priority

hedwards May 16 05

What to test

• CapCav2@meson Oct 05• 3rdHar Horiz Test Jan 06 or sooner• TESLA Horiz Test Jan 06 or sooner• (3.9GHz transverse test) in 06 at A0• CapCav2@inj is this A0 or NML 06?• 2 3.9GHZ @inj “• Tesla module(s) Jan 07• Vertical test dewar lower priority

Places under discussion (1)• Meson (mainly 4K cryo)

– CapCav2 @4K– CapCav2 @2K– PD front end @4K– Tesla module test stand @2K

• New Muon– Tesla modules w beam @2K– Inj : 4 SRF cavities @2K– Vert dewar @ 2K– CW @ 2K– (Tesla module test stand @2K)

• MTF– Horiz Test Cryostat @2K– (Vertical Test Cryostat @2K)

• A0– South cave (needs improved shielding)

• Inj upgrade - addition of 1 Tesla and 1 3.9GHz (max space allows only 1 3.9??)

– North cave (only light shielding)• Has cryo hookup• Test of 3.9GHz cavities possible • Maybe initial tests of Tesla horiz Test cryo possible?

Places under discussion (2)

Horiz Test Cryostats (1)• 3.9GHz- critical for the 3rdHar module

• Possibilities– 1- HorTestCry Tom and Valeri

• Toms AAC talk said ready end 06@MTF• How long to build just cryostat and hook to either AO-N or

meson (when it has 2K)???

– 2- Use the final 4 cav module 3rdHar mod for single cavity tests @ either A0 or Meson? Needs cryo connection- how hard?

– 3- Use CapCav2 at A0/Meson?– 4- Build another CapCav cryostat?

• Single Tesla cavity test – Options 1,3,4

• Option 3 kills activities on CapCav2 after oct. ie any installation in the injector for at least a year

• Transverse 3.9 will use its 2 cav prototype for tests and inj installation

• How much of the effort is in the cryostat and how much in the hook up??

Horiz Test Cryostats (2)

Peters schedule• Begin temporary cryo install NML Dec 05• Begin commissioning cryo Oct 06• Begin Op Inj Jan 07• Begin Op Inj & 1 module Apr 07

My Comments• Why wait 6 months to begin cryo install• I believe PI install/move more like 3months if prepared (not 9) • The connection of a module is a big deal - skip meson• We need the cryo schedule to understand the soonest the inj could run

in NML, and whether or not to make any A0 inj mods AND cryo mods• Could we run inj in NML by June 06?? Mod when avail

My conclusions• We should not have a ILC test stand in Meson - It should be

2nd priority to module with beam in NMU

• Getting cryo and beam in NMU should be highest priority after Oct CapCav2 test (higher than PD cryo if conflict)

• We should determine fastest way to HorTestCryo for both 1.3 and 3.9 GHz

• It is unlikely that this is MTF which should be given low priority.

• The vertical dewar should be planned for NMU as that is where cryo will be available.

• We should understand the possibilities of operating CW/VD tests with reduced refrig and reevaluate locations for VD